41 results about "Hydrogen safety" patented technology

The application belongs to the technical field of hydrogen safety monitoring, and specifically relates to a hydrogen leakage detection and positioning system.The system comprises a hydrogen leakage far-field detection unit array, a data platform and a hydrogen leakage on-site attached detection unit.The far-field detection unit array is composed of multiple wireless hydrogen sensors and a leakage hydrogen collection device, is used for remotely and timely detecting the hydrogen concentration of a hydrogen system to be detected, and sends the detected hydrogen concentration and the corresponding detection unit number to the data platform;the data platform determines the hydrogen leakage position accordingly;the hydrogen leakage on-site attached detection unit is arranged in the detection range of each far-field detection unit, is attached to a key position with a relatively high leakage probability in the hydrogen system to be detected, and realizes visual detection of hydrogen leakage;the system can improve the safety, accuracy and cost-effectiveness of hydrogen leakage monitoring, and is suitable for various application scenarios such as hydrogen refueling stations and hydrogen energy production and storage sites.

The present invention provides an apparatus for evaluating a safety valve for liquid hydrogen, the apparatus including: a hydrogen liquefaction unit configured to liquefy hydrogen gas and store the liquid hydrogen in a liquid hydrogen storage chamber; and a hydrogen vaporization unit configured to vaporize the liquid hydrogen stored in the liquid hydrogen storage chamber. By delivering high-pressure cryogenic vaporized hydrogen, which is generated by accumulation of vaporized hydrogen filling an internal space of the liquid hydrogen storage chamber, to a liquid hydrogen safety valve for a test, performance of the safety valve for liquid hydrogen can be evaluated under actual operating environmental conditions. Accordingly, reliability of performance evaluation data for the safety valve for liquid hydrogen can be ensured.

The invention discloses an energy-saving intelligent purging method in a galvanic pile shell, relates to the technical field of fuel cells, and introduces an intelligent purging strategy to ensure dew point control and hydrogen safety in the galvanic pile shell at the same time, so that waste of compressed air is avoided, and energy is saved. It is guaranteed that condensation is not generated in the galvanic pile shell (the purging amount is intelligently calculated), the combustible gas explosion risk is avoided (the purging amount is intelligently calculated), and meanwhile cold start of the galvanic pile can be facilitated (galvanic pile cooling caused by excessive purging is avoided).

This invention provides a BCC solid-state hydrogen storage safety control system, comprising: a hydrogen storage device having a hydrogen storage tube with a built-in BCC hydrogen storage alloy, a hydrogen charging valve for controlling the opening and closing of the hydrogen storage tube, and a coolant channel; a cooling system forming a closed-loop circulation loop with the coolant channel for supplying coolant to the hydrogen storage device; and a safety interlock control module for collecting safety-related parameters of the hydrogen storage device, cooling system, and environment. When the parameters meet the first-level, second-level, and third-level interlock conditions, the module correspondingly activates the first-level interlock to open the hydrogen charging valve, the second-level interlock to adjust the hydrogen flow rate and the operating parameters of the cooling system, and the third-level interlock to close the hydrogen charging valve. The BCC solid-state hydrogen storage safety control system of this invention features high integration, good safety, and high intelligence. Through an optimized heat exchange structure, rigorous multi-level interlock logic, and a comprehensive fault diagnosis model, the system achieves efficient thermal management, full-process safety protection, and intelligent fault handling during the hydrogen charging process.

This application discloses a multi-scenario test system for hydrogen safety in tunnels, comprising: a simulated tunnel component, which includes a tunnel pipe and an axial flow fan disposed at one end of the tunnel pipe. The axial flow fan faces the tunnel pipe and is used to purge the tunnel pipe and provide different ventilation velocities within the tunnel pipe. Sensor holes are provided on the side wall of the tunnel pipe for connecting external sensors as needed. An installation base is provided at the bottom of the tunnel pipe. A mounting bracket is provided, which includes a base plate and a top plate, which are supported by a support plate. The base plate is mounted on the installation base. A hydrogen storage component is provided, which includes a hydrogen storage tank, a mounting plate, and a mounting clamp. The mounting clamp fixes the hydrogen storage tank to the mounting plate. The axial direction of the hydrogen storage tank is parallel to the mounting plate. The mounting plate is mounted on the top plate, and the angle between the mounting plate and the top plate is 0°–90°.

A hydrogen explosion suppression system and method based on multi-dimensional perception and hierarchical linkage belong to the technical field of hydrogen safety protection. The system comprises a control unit, a hydrogen concentration sensor, a spark sensor, a flame sensor, a pressure sensor, a control unit and an explosion suppression action mechanism. The control unit receives alarm signals from each sensor and controls the corresponding explosion suppression action mechanism according to the preset hierarchical linkage rules, realizing hierarchical identification and linkage explosion suppression based on multi-dimensional signals such as hydrogen concentration, spark, flame and pressure, and solving the technical problems of single hazard identification dimension, fixed explosion suppression response mode and difficult to balance response speed and explosion suppression effect in related technologies.

The invention relates to a hydrogen-rock microfluidic in-situ test system and method for simulating underground hydrogen storage. The system comprises an environment control module, a reaction type microfluidic chip, a fluid injection module, a back pressure control module, an in-situ test module and a gas chromatographic analysis module, the environment control module provides a high-temperature and high-pressure environment; the reaction type micro-fluidic chip is arranged in the environment control module and provides a hydrogen-rock reaction place; the inlet end of the reaction type micro-fluidic chip is connected with the fluid injection module, and the outlet end of the reaction type micro-fluidic chip is sequentially connected with the back pressure control module and the gas chromatographic analysis module; the back pressure control module is used for maintaining a preset pressure environment; the in-situ test module is used for capturing fluid distribution and mineral form change in the chip; and the gas chromatographic analysis module is used for analyzing the composition and concentration change of a reaction outlet gas-phase product. According to the device and the method, the micromorphological evolution and the macroscopic reaction rate of the hydrogen-rock reaction in the underground reservoir environment are synchronously monitored, and an accurate experimental means is provided for geological hydrogen storage safety evaluation.

The utility model discloses a hydrogen leakage disposal system for an airplane, which belongs to the technical field of airplane hydrogen safety and comprises a hydrogen leakage detection unit, a signal processing unit, a control unit, a passive ventilation unit and an inert gas control unit. The hydrogen leakage detection unit and the passive ventilation unit are arranged on a cabin wall plate right above a hydrogen leakage danger area; the inert gas control unit is arranged right below the hydrogen leakage danger area; the hydrogen leakage detection unit is connected with the signal processing unit, the signal processing unit is connected with the control unit, and the control unit is connected with the inert gas control unit and the passive ventilation unit; according to the system, the mode that the cabin space is filled with inert gas replaces the mode that a traditional fire extinguisher extinguishes fire points, the system is suitable for the situation that the hydrogen leakage position in a large space is unknown, the detection, alarm and disposal functions can be achieved in the flight process and the ground operation process of an aircraft, and the safety of hydrogen use of the aircraft can be remarkably improved.

The utility model relates to the field of protection devices, in particular to a solid hydrogen storage safety protection device. Comprising a solid hydrogen storage device, a controller and a protection assembly, the solid hydrogen storage device comprises a shell and a hydrogen storage tank, the hydrogen storage tank is installed in the shell, the protection assembly comprises a protection box and a bottom plate, the controller is installed on one side of the outer wall of the protection box, the bottom plate is attached to the inner wall of the protection box, and the shell is placed on the upper surface of the bottom plate; two mounting plates are fixedly connected to the lower surface of the bottom plate, and fixing plates are fixedly connected to the two sides of the outer wall of the protection box. The solid-state hydrogen storage safety protection device has the advantages that in the daily use process of the solid-state hydrogen storage device, the protection box can isolate external air from the solid-state hydrogen storage device, so that danger caused by hydrogen leakage is prevented, air leaked from the interior of the protection box can be automatically poured into the tank body to be stored, and the safety of the solid-state hydrogen storage device is improved. And the use safety of the solid hydrogen storage device is improved.

The invention discloses a hydrogen supply system control method and system of a hydrogen fuel cell vehicle, the vehicle and equipment. The hydrogen supply system control method of the hydrogen fuel cell vehicle comprises the following steps: receiving a hydrogen replacement request of a hydrogen supply system gas storage cylinder; if the electric quantity of the vehicle power battery meets the replacement condition, judging whether an obstacle influencing filling work exists in the hydrogenation equipment calibration area or not according to the environment image; if not, controlling the vehicle to park in the area, and detecting whether the hydrogen supply system reaches a safety index or not; if yes, the vehicle is controlled to enter a hydrogen system standby state, and whether the whole vehicle state meets the hydrogen adding condition or not is detected; if yes, hydrogen filling operation is carried out, and in the filling process, whether the hydrogenation state is abnormal or not is judged; and if not, continuing the hydrogenation operation until the hydrogenation completion condition is met, otherwise, interrupting the filling process and giving an alarm prompt. By adopting the application, automatic monitoring and safety judgment can be performed on the whole hydrogenation process, so that the hydrogenation safety is ensured, and the control efficiency of the hydrogen supply system is improved.

The application discloses a vehicle-mounted mobile methanol autothermal reforming hydrogen production system and a hydrogen production method. The system comprises a methanol storage tank and a desalted water storage tank, both of which are communicated with a mixed liquid tank, and the mixed liquid tank is sequentially communicated with a gasifier, a premixer, a hydrogen production reactor, a condensation heat exchange unit and a hydrogen purification unit. An air preheating unit is communicated with the premixer and delivers hot air to the premixer. Methanol and desalted water are mixed in the mixed liquid tank, methanol water solution is heated to form a methanol water vapor mixture in the gasifier, hot air is mixed with the methanol water vapor in the premixer, and a methanol autothermal reforming reaction occurs in the hydrogen production reactor. The reaction product is input into the condensation heat exchange unit and the hydrogen purification unit for treatment. The application has the advantages of compact structure, simple operation, good stability and the integration of hydrogen production, storage and utilization, and solves the problems of large hydrogen production system area, high hydrogen transportation safety risk and high hydrogen use cost in the prior art.

The invention belongs to the technical field of blast furnace ironmaking, and discloses a blowing-out process and a safety control method of a hydrogen-rich carbon circulating oxygen blast furnace. According to the method, safe and controllable furnace shutdown is achieved through systematic processes of preparation before furnace shutdown, precise load design, dynamic medium regulation and control, furnace top temperature and water fetching control, hydrogen safety monitoring and multi-dimensional end point judgment. The furnace condition is adjusted and the furnace is thermally washed before blowing out, the comprehensive ore-coke ratio load of 3.0-3.4 is designed based on the basic furnace temperature, the furnace top temperature is strictly controlled to be smaller than or equal to 350 DEG C in the process, the nitrogen flow is cut in advance, the nitrogen flow is increased in a stepped mode, the gas cutting operation is triggered with the hydrogen content being 12% as the threshold value, and the blowing-out end point is determined by combining a radar stock rod, wind pressure monitoring and manual tuyere exploration. According to the method, the hydrogen explosion risk is effectively prevented and controlled, the thermal state is accurately controlled, and the method is suitable for HyCROF and similar low-carbon blast furnaces through industrial verification and has extremely high safety, reliability and popularization value.

This invention relates to the field of damage testing platforms, specifically disclosing a hydrogen-temperature-load synchronous damage testing platform, comprising a hydraulic rod, a support platform, a hydrogen tank, a heating sleeve, and a test cylinder. The test cylinder is mounted on the support platform, and the hydrogen tank is mounted on one side of the support platform via a clamp. The heating sleeve is located on the outer side of the test cylinder. A top cover is provided on the top of the test cylinder, and a punch rod is located inside the top cover. The top end of the punch rod is connected to the telescopic end of the hydraulic rod. A hydrogen supply cylinder is located at the bottom of the test cylinder, and an inlet pipe and a pressure detection pipe are respectively located on both sides of the hydrogen supply cylinder. A pressure gauge is mounted on the pressure detection pipe. This invention's small punch rod method only requires the preparation of small circular samples and can be carried out in special environments such as high and low temperatures. Due to the small size of the device, the required hydrogen loading is small, improving hydrogen safety. The top cover of the test cylinder is assembled with the test cylinder by a pin.

The present application relates to the technical field of automobile energy supply, in particular to a solid-state hydrogen storage-fuel cell integrated powertrain system based on dual-mode hydrogen supply, which comprises a hydrogen supply path identification module, a hydrogen storage unit state monitoring module, a linkage path switching module, a fuel cell load matching module and a safety hydrogen discharge control module. In the present application, the hydrogen supply pressure difference is obtained by dynamically comparing the pressure of the hydrogen storage tank cavity and the hydrogen inlet pressure of the fuel cell, which can accurately identify the current hydrogen supply path state in the early stage, realize the rapid determination of the hydrogen supply mode and the precise control of the path switching, effectively screen whether there is a hydrogen supply interruption risk, use the cross comparison of the key state signals of the main channel and the standby channel to improve the reliability of the hydrogen supply path switching, and through the linkage feedback mechanism between the hydrogen concentration unit time change rate and the catalytic converter control power, the instant response and energy consumption optimization of the hydrogen discharge safety control are ensured.

The application relates to the technical field of hydrogen production by electrolysis of water, and discloses a hydrogen safety control method and device for an alkaline water electrolysis hydrogen production system, which comprises the following steps: constructing an alkaline water electrolysis hydrogen production system voltage model; obtaining hydrogen cross-diffusion data caused by hydrogen diffusion through a diaphragm and hydrogen circulation cross data in an alkali liquor circulation loop, constructing an alkaline electrolytic tank oxygen hydrogen concentration model based on the hydrogen cross-diffusion data and the hydrogen circulation cross data; determining oxygen hydrogen concentration real-time data based on the alkaline water electrolysis hydrogen production system voltage model and the alkaline electrolytic tank oxygen hydrogen concentration model; obtaining oxygen hydrogen concentration monitoring data through a hydrogen sensitivity monitor, and performing hydrogen safety control on the alkaline water electrolysis hydrogen production system based on the oxygen hydrogen concentration real-time data and the oxygen hydrogen concentration monitoring data. The application improves the calculation accuracy of the oxygen hydrogen concentration, realizes double control of the hydrogen safety of the alkaline water electrolysis hydrogen production system, and guarantees the hydrogen safety of the alkaline water electrolysis hydrogen production system.

The invention discloses a hydrogen safety management structure of a hydrogen engine crankcase. The hydrogen safety management structure comprises a gas inlet pipe, a gas supplementing header pipe, a control valve, a cylinder body, a plurality of sensors and at least two branch pipes. Wherein the air inlet pipe is connected with an air source; one end of the air supply header pipe is communicated with the air inlet pipe, and the other end of the air supply header pipe is connected with the branch pipe; the branch pipe is communicated with the air cylinder body through an air supplementing connector so that air can be supplemented to a crankcase. The sensor is arranged in the cylinder body and is used for detecting the concentration of hydrogen in the crankcase; the control valve is arranged between the air supply main pipe and the branch pipe so as to adjust the amount of air entering the crankcase. Aiming at the hydrogen leakage safety pain point of the hydrogen engine crankcase, an integrated management and control structure of directional gas supply and accurate detection is constructed, and the problem that a traditional engine does not have special crankcase hydrogen concentration management and control hardware is solved.

The invention discloses a hydrogen energy unmanned aerial vehicle hydrogenation safety protection system and a hydrogen energy unmanned aerial vehicle hydrogenation station, and relates to the technical field of hydrogenation unmanned aerial vehicles. The hydrogen energy unmanned aerial vehicle hydrogenation safety protection system comprises an unmanned aerial vehicle landing pad, a double-gun double-metering hydrogenation machine and a spraying cooling device. The double-gun double-metering hydrogenation machine is arranged on one side of the unmanned aerial vehicle take-off and landing platform and is used for carrying out hydrogenation operation on the hydrogen energy unmanned aerial vehicle when the hydrogen energy unmanned aerial vehicle lands on the unmanned aerial vehicle take-off and landing platform; the spraying cooling device is arranged on one side of the unmanned aerial vehicle takeoff and landing pad, and a spraying opening of the spraying cooling device faces the unmanned aerial vehicle takeoff and landing pad and is higher than the plane where the unmanned aerial vehicle takeoff and landing pad is located; the spraying cooling device is used for being controlled to spray a liquid cooling medium to the unmanned aerial vehicle takeoff and landing platform. According to the technical scheme disclosed by the invention, the safety of the hydrogen energy unmanned aerial vehicle during hydrogenation operation can be improved.

This invention discloses a hydrogen leakage ventilation system and method for hydrogen-powered aircraft, relating to the field of hydrogen safety in hydrogen-powered aircraft. The system's liquid hydrogen pipeline is sequentially connected to a liquid hydrogen Dewar flask, a third cryogenic shut-off valve, a liquid hydrogen primary heat exchanger, a first cryogenic shut-off valve, a liquid hydrogen secondary heat exchanger, a third shut-off valve, and the engine; the coolant outflow pipeline is sequentially connected to the engine, a fourth shut-off valve, and the liquid hydrogen secondary heat exchanger; the coolant return pipeline is sequentially connected to the liquid hydrogen secondary heat exchanger, the first shut-off valve, and the engine; the engine exhaust pipeline is sequentially connected to the engine, a fifth shut-off valve, a liquid hydrogen primary heat exchanger, a second cryogenic shut-off valve, a dryer, and an exhaust gas buffer tank; a low-flow purging pipeline is sequentially connected to the exhaust gas buffer tank, a back pressure valve, and an vent; and a high-flow purging pipeline is sequentially connected to the buffer tank, the second shut-off valve, and the exhaust port. This invention has the functions of passively and actively venting oxygen-deficient exhaust gas, used for dilution purging in the absence of significant hydrogen leakage and in the event of significant hydrogen leakage, respectively.

The invention belongs to the technical field of electrolytic hydrogen production process control, and relates to an electrolytic hydrogen production safety and emergency switching system based on multistage interlocking logic, and the system comprises a data acquisition module which collects and synchronizes electrical and fluid parameters and feedback states, and generates a basic operation state set; the pressure prediction module is used for calculating bubble influence by using a bubble lag compensation model and generating a future pressure prediction vector; the discharge capacity calculation module is used for calling a valve curve to obtain a flow coefficient under the current opening degree and generating a mechanical response envelope line; the logic comparison module is used for comparing the prediction vector with the envelope line, and generating a locking signal to restrain rectifier power adjustment when the gas machine response is mismatched; and the grading interlocking execution module activates an L1 or L2 grade strategy according to differential pressure convergence and concentration. According to the invention, the problems of pressure control lagging and insufficient safety margin caused by mismatching of the gas production rate and the mechanical discharge capacity of the electrolytic hydrogen production system under rapid power fluctuation are solved.

This invention relates to a hydrogen supply system, and more particularly to an intelligent control system and method for hydrogen supply in fuel cell commercial vehicles. The hydrogen supply control system for fuel cell commercial vehicles of this invention, with a hydrogen supply system control unit as its core, collects temperature, pressure, and hydrogen concentration signals from a multi-cylinder hydrogen system for comprehensive system status monitoring and evaluation. The electronic control subsystem includes a fuel cell system control unit, a vehicle control unit, a hydrogen supply system control unit, and on-board instruments. This invention's system performs fault diagnosis on the hydrogen supply status, further improving system reliability. Using the control method of this invention, the system status of each hydrogen cylinder in the multi-cylinder hydrogen system can be evaluated for temperature, hydrogen pressure, and hydrogen concentration. This achieves rapid, accurate, and controlled hydrogen supply to the fuel cell system under different operating conditions, while ensuring the vehicle's hydrogen safety.

This invention discloses a method and system for determining and controlling hydrogen leakage faults in fuel cell vehicles. The method includes determining the vehicle's operating state, which includes normal driving, high-voltage idling, and low-voltage idling. It also involves real-time monitoring of the hydrogen concentration in the vehicle's fuel cell system. When the hydrogen concentration exceeds a preset concentration threshold: if the vehicle is in normal driving, a hydrogen leakage fault handling mechanism is executed; if the vehicle is in high-voltage idling, the hydrogen storage system pressure is checked, and the decision to execute the hydrogen leakage fault handling mechanism is determined based on the result; if the vehicle is in low-voltage idling, the power supply voltage of the hydrogen concentration sensor and the hydrogen storage system pressure are checked, and the decision to execute the hydrogen leakage fault handling mechanism is determined based on the result. This method effectively distinguishes between actual leaks and sensor malfunctions or residual hydrogen interference from exhaust emissions, significantly reducing false alarm rates and improving the accuracy and reliability of hydrogen safety management.

This invention discloses a frequency-modulated electromagnetic heating device that combines functional magnetocaloric hydrogen storage and hydrogen safety management. It includes a main control chip, a DC-DC converter, a full-bridge inverter circuit, a frequency selection circuit, a magnetocaloric coil, a magnetocaloric hydrogen storage container, a miniature vacuum pump, a solenoid valve, and a sensor system. The hydrogen storage device also includes a pressure-composition-temperature (PCT) tester. A hydrogen storage method based on functional magnetocaloric hydrogen storage materials and frequency-modulated electromagnetic heating includes the following steps: Step 1, determining and calibrating the resonant point of the functional magnetocaloric hydrogen storage material; Step 2, using frequency-modulated electromagnetic heating to release hydrogen from the functional magnetocaloric hydrogen storage material; After completing Step 1, i.e., between Step 1 and Step 2, a heating-detection process is added. When the heating power is 30-50W, the initial hydrogen release time is 120-810s, and the complete hydrogen release time is 1240-2250s.

The invention provides a container type solid oxide high-temperature electrolysis device. Comprising a container body, and the interior of the container body is divided into a process equipment area and a control auxiliary area through partitions; two high-temperature electrolysis modules, an auxiliary pipeline communicated with the high-temperature electrolysis modules, a hydrogen safety system and an external pipeline interface arranged on the container body are arranged in the process equipment area; a power distribution cabinet, a water purifier, a hydrogen production power supply cabinet and an on-site console are arranged in the control auxiliary area; and a control system is arranged in the on-site console and is used for monitoring the running state of the high-temperature electrolysis modules and dynamically adjusting the running mode and the working point of each high-temperature electrolysis module according to the hydrogen using demand of a user and an external electricity price signal. The running state and the working point of the high-temperature electrolysis module can be dynamically adjusted according to the hydrogen demand of a user and the peak-valley electricity price, and the system has the advantages of modular design, flexible operation, reliable work, easy installation and expansion, high efficiency and the like.

The invention discloses a hydrogenation safety control method and system of a hydrogen fuel cell vehicle, the vehicle and equipment. The hydrogenation safety control method of the hydrogen fuel cell vehicle comprises the following steps: judging whether a hydrogenation request signal is obtained or not; if yes, the safety state of the hydrogen refueling station is recognized according to the current hydrogen refueling station where the vehicle is located; after confirming that the safety state of the hydrogen refueling station passes, judging whether a hydrogen refueling condition is met or not; if the hydrogenation condition is met, controlling the vehicle to perform hydrogenation operation; in the hydrogenation process, a hydrogenation environment image and a hydrogenation process image are obtained, and whether the hydrogenation environment and / or the hydrogenation process are / is abnormal or not is determined according to the hydrogenation environment image and the hydrogenation process image; if there is an anomaly, the hydrogenation operation is terminated. By adopting the method, the safety state and the hydrogenation conditions of the hydrogen refueling station are verified before hydrogenation, and safety monitoring is performed in combination with the environment and process images in the hydrogenation process, so that the safety and the reliability of the hydrogenation process of the hydrogen fuel cell vehicle can be effectively improved.

The invention relates to a hydrogen safety monitoring method and system. The method comprises the following steps: acquiring multi-source hydrogen concentration data from at least one monitoring point and corresponding environmental parameter data; inputting the multi-source hydrogen concentration data and the environmental parameter data into a pre-trained environmental adaptive correction model, and compensating and correcting the multi-source hydrogen concentration data by the environmental adaptive correction model based on the environmental parameter data so as to output corrected hydrogen concentration data and corresponding confidence; and based on the corrected hydrogen concentration data provided by at least two hydrogen sensors with different principles and the confidence coefficient thereof, performing data fusion judgment to generate a fusion judgment result and trigger an alarm of a corresponding level. According to the hydrogen safety monitoring method and the hydrogen safety monitoring system, the risks of false alarm and missing alarm caused by environmental interference or errors of a single sensor are reduced, and the overall reliability and accuracy of the monitoring system are enhanced.

The invention discloses a triaxial purging drainage arrangement structure in a hydrogen fuel cell box body, and aims to solve the problems of incomplete hydrogen purging and insulation fault caused by liquid water in the existing hydrogen fuel cell box body. The structure comprises a box body, a stop valve, a three-axis connector assembly, a pressurization diffusion purging bamboo joint connector, a small axial flow fan, a drainage bamboo joint connector and a flow guide structure. The front side plate is provided with a stop valve as a purging inlet, a plurality of groups of three-axis joint assemblies are arranged in the box body to realize X-axis, Y-axis and Z-axis purging, and the rear side plate is provided with an axial flow fan which is diagonally arranged with the three-axis joint assemblies; the bottom plate is provided with a soil slope type convex arc flow guide structure, a slope flow guide ditch and a drainage groove, and the three sets of three-axis connector assemblies are arranged corresponding to the ditch and matched with blowing force and gravity to achieve flow guide and drainage of liquid water. Through diagonal arrangement of blowing and sucking, dead-corner-free blowing of hydrogen is achieved, liquid water is thoroughly discharged in combination with a multi-stage flow guide structure, hydrogen safety risks and insulation faults are effectively avoided, and practicability is high.

This application relates to the field of hydrogen and oxygen production through water electrolysis, and discloses a system and method for hydrogen and oxygen production through anion exchange membrane electrolysis of water in high-altitude environments. The system includes a liquid supply unit, an electrolyzer unit, a gas-liquid separation and purification unit, a pressure control unit, and a central control and coordination unit. The liquid supply unit is connected to the electrolyzer unit, which is also connected to the gas-liquid separation and purification unit. The condensate produced by the gas-liquid separation and purification unit is returned to the liquid supply unit. The pressure balance control unit is connected to both the hydrogen and oxygen sides within the gas-liquid separation and purification unit. The central control and coordination unit is connected to the electrolyzer unit. This system solves the technical problem of achieving long-term, high-efficiency, safe hydrogen supply, and stable oxygen supply in anion exchange membrane water electrolysis system under low-pressure conditions in high-altitude environments. Furthermore, it significantly improves system reliability and environmental adaptability, and meets the dual requirements of hydrogen and oxygen co-production in special scenarios.

The application provides an electric hydrogen production system and a control method thereof, and relates to the technical field of safe operation of hydrogen production by water electrolysis. In one aspect, the application provides an electric hydrogen production system, which is provided with a pipe pressure balancing device, and can monitor the current change amount of a PEM electrolytic cell, the actual gas pipe pressure of an oxygen exhaust pipe and a hydrogen exhaust pipe, and the actual liquid level of a gas-liquid separation device in real time. The application adjusts the real-time current of the PEM electrolytic cell to adjust the gas pipe pressure of the pipe through a control center, and adjusts the gas pipe pressure of the pipe through a pipe pressure regulating valve, so that the gas pipe pressure of the oxygen exhaust pipe and the hydrogen exhaust pipe both meet the safe pressure relationship. In another aspect, the application provides a control method of the electric hydrogen production system, which realizes the safe operation of the electric hydrogen production system through self-checking control, current control, liquid level control and emergency control. The application not only improves the safety of the system, but also ensures the purity and efficiency of the gas, so that the large-capacity PEM electrolytic cell is more reliable and efficient in actual application.